People who say they care but don't
You tell some people, they listen and they actually care. Hell, I've told four friends and each one has been supportive and helpful - even if it is just listening to my problems or maybe accommodating for my anxiety/depression. Those are the best people, the ones who make me feel somewhat normal and not just beneath everyone.
Then there's people who say they'll listen when you first go to them, but once the initial veil of good intentions falls off they ignore or avoid you. It's like offering someone who's drowning a boat ride out of hell, only to just sit and ignore them. Perhaps one of the worst feelings is having your hopes built up only to be shattered once again. I've experienced this and afterwards it feels like I'm back at square one with the depression. I wouldn't care as much if I was ignored by this particular person in the first place, but why give false hope? All I want is to share my experiences with someone and let them understand why I've been the way I've been. That way I'd feel less isolated.
That being said, I wouldn't avoid telling people about my issues because of this one instance. For those reading this who are perhaps mulling over looking for help - what I'd say is this: if you're looking to tell or reach out to or talk to someone, do. Chances are if you feel like talking to your friend, family member, colleague, teacher or doctor about it, you know them well enough to trust them and that they will be supportive and helpful - even if sometimes, because of the SA or depression, you doubt anyone cares. Some people care less than you hope, some people care more than you think. I suppose life and dealing with SA/depression/problems is about sorting one from the other.